Apparatus for automatically exchanging incandescent bodies.



G. DALEN.

APPARATUS FOR AUTOMATICALLY EXCHANGING INCANDESCENT BODIES;

APPLICATION FILED IULYI], 19l4.

Patented Jan. 2, 1917.

4 SHEETSSHEET 1- m: mmms versus ca. Pnomuma. WASNINU mu 0 c G. DALEN.

APPARATUS FOR AUTOMATICALLY EXCHANGING INCANDESCENT BODIES.

APPLICATION EILED JULYIT, 19M.

1,210,769. Patented J ah. 2, 1917.

4 $HEETSSHEET 2.

fly .2. my J.

WITNESSES. mvENTQR ATTORNEY s. DALE N.

APPARATUS FOR AUTOMATICALLY EXCHANGING INCANDESCENT BODIES.

APPLICATION FILED JULYIY. I914.

1 21 0,769. Patented J an." 2, 1917.

4 SHEETSSHET 3.

INVLi/VTOR jp w BY ATTORNEY m: Nrmms psrsns cD FNOTU-LIYNON WASMING MW 0G. DALE'N.

APPARATUS FOR AUTOMATICALLY EX'CHANGING INCANDESCENT BODIES.

APPLlCATiON men JuLYn. 1914.

1,210,769. Patented Jan. 2, 1917.

4 SHEETS-SHEET 4- INVENTOR WITNESSES. ismizw BY Z i. A MM A'I'T'ORN EYGUSTAF DALEN, or LIDINGoN, STOCKHOLM, swnnnn.

APPARATUS FOR AUTOMATICALLY EXCI-IANGING INCANDESCENT BODIES.

Specification of Letters Patent.

Patented Jan. 2, 1917.

Application filed July 17, 1914. Serial No. 851,671.

To all whom it may concern Be it known that I, GUs'rAF DALiiN, engineer,residing, at Skarsatra, Lidingen, Stockholm, Sweden, have inventedcertain new and useful Improvements in Apparatus for AutomaticallyExchanging Incandescent Bodies, of which the following is aspecification.

viy present invention relates to an apparatus for automaticallyexchanging incandescent bodies without interrupting the lighting to anyconsiderable degree.

The accom Jan in drawin s show as examples illustrating the invention,some constructional forms of embodiment of the same in which theexchange of the said bodies is effected automatically by the action of aflame on a releasing device, such flame becoming effective when suchincandescent body had been burst, ruptured, or broken.

it will be understood that changes in the details of construction may bemade within the scope of the claims without departing from my invention.

tn order that my invention may be readiiy understood and comprehendedreference should be had to the accompanying drawings in which, i

Figure 1 is a view partly in vertical section and partly in sideelevation of an apparatus embodying my invention; Fig. 2 is a similarview of a portion of said apparatus showing a modified construction;Fig. 3 is a view taken on the line 11 of Fig.2; Fig. i is a view showingpartly in elevation and partly in section a portion of another modifiedconstruction of apparatus embodying my invention; Fig. 5 is a top planview of a portion of the apparatus shown in Fig. i;

Fig (3 is a view partly in side elevation and partly in verticalsectionof another modi tied construction of apparatus embodying my invention;and Fig. 7 is a top plan view of the apparatus shown in Fig. 6.

In Fig. 1 of the drawings, 10 designates a frame to which a pipe 11 issecured. In the construction as illustrated the pipe 11 is verticallyarranged and communicates at one end. with a gas conduit 12. The otherend of said pipe is formed as a cock 13, the casing 14: of which isprovided with hollow arms 15, two or more of which may be employed.These arms carry burners 28 and incandescent bodies, shown in the formof mantles, and designated in. the drawings by the reference numerals 4and 5. The reference numeral a is employed to designate what I havetermed the active. incandescent body and the reference numeral 5 theinactive incandescent body which may be referred to also as anadditional or a reserve incandes cent body. Any one of theseincandescent bodies becomes active when the burner with which it may beassociated becomes active or when any one of them may become associatedwith an active burner. The casing 1 5 is rotatable on the cock Band forthe purpose of effecting rotating movement thereof it is provided with atoothed ring 16 which is engaged by a driving wheel 17 on a shaft 18which is actuated by a coiled spring 19 in a casing 23, said springbeing wound, for the purpose of storing up power, by means of key 20.For controlling the movement of the shaft 18 a fan 21 is provided, theshaft 22 of which is connected with the shaft 18 in known manner bymeans of a gear wheel 22 thereon and a gear wheel 22 on said shaft 18.From the casing 14 arms 2% extend, the number of which corresponds tothe number of arms 15, and beneath the line or path of movement of theincandescent bodies a stop 25 is provided which is supported on an arm26 which extends from the shaft 11. It will be understood that the stopconsists of mate "ial which is indestructible by the action of the flameof the burner 28 thereon. A pin or projection 27 on each of the arms 2%is adapted to contact with the stop 25 as the casing 14 rotates underthe influence of the power exerted by the coiled spring 19. The said pinor projection 27 consists of material which can be burnt, fused orweakened by the influence or action of the heat of the flame of anactive burner situated in proximity thereto.

Normally the parts of the apparatus are in the position indicated inFig. 1 in which one of the incandescent bodies, designated by thereference numeral d, and its associated burner 28 occupy positionimmediately above the stop 25. The conduits for supplying gas are soarranged with respect to the passage-way through the cook 13 that gasfor the flame is supplied to that burner which is situated in proximityto the stop 25. The result is that the body designated is acted upon bythe flame and is thereby converted into a state of incandescence inwhich it is luminous. If the said body, which, in the construction shownconsists of a mantle, should rupture or break the flame of the burner 28would strike the pin 27 and render the same ineffective as a stoppingelement, it being understood that the said pin consists ofmaterial whichwould either burn, fuse or become so weakened by the action of the flameof the burner thereon that it would cease to perform its function asa'stop element and would permit the casing let together With thearmscarried thereby to rotate under the influence of the powverspring 19.When the element 27 is destroyed or rendered ineffective, as by burningor-fusing, or is otherwise weakened, by the action of the flame of theburner 28, the ruptured, burst or broken incandescent body 4' is movedforward as stated while the inactive additional or reserve incandescentbody 5 and the stop element 27 in proximity thereto move forward intothe position'previously occupied by the incandescent body- 1 and thestop element 27 inproximity thereto. he additional or'reserveincandescent body 5 is stopped by the action of the stopping elements 25and 27 in the same position as is at present occupied by the activeincandescent body l.

When it reaches that position gas is supplied from the conduit 12 to theassociated burner, as is clearly shown in'said Fig. 1 of the drawings.For bringing the additional or reserve incandescent body 5 thus carriedfor ward into the position occupied by the body 4 into operation oruseits burner may be provided with a pilot flame which even in theinactive position of the incandescent body is fed'with gas from aspecial pilot flame conduit 29 which communicates with V the gas supplyconduit 11. Instead of such arrangement, however, the gas from theburner 28 which may be moved forward as above described may be lightedby means of a pilot flame which is fed from a special conduit 30. Saidconduit 30 may be provided as indicated in the construction shown inFig. 1 in the arm 26 which carries the stop 25 and which may also carrya bearing 81 for the shaft 18 of the driving wheel 17. Although I haveillustrated the arms 15 as being horizontally arranged it will beunderstood that they may be otherwise arranged if desired withoutdeparting from my invention. It is also tobe understood that theadditional or reserve incandescent body or bodies may be moved forwardas required and stopped in proper position and retained as reserve oradditional bodies in inactive position in any other manner and by anyother means than that shown as may be desired.

In Figs. 2 and 3 of the drawings I have shown a modified constructionwhich comprises means whereby the pilot flame is automatically lightedand extinguished. In said Figs. 2 and 3, 14 designates, as in Fig. 1,the rotating cock 'casmg, 15 the hollow arms which carry theincandescent bodies, 4. the

say-by being rotated on the stud 33, which active incandescent body, 24the arms which areprovided with the pins 27 to be burnt or fused or,otherwise weakened, and 25 the stop for holding the arms15 together withthe incandescent bodies in stopped position with one of the said bodies,a, over the stop 25. In the construction shown'in the sald Fi s. 2 andi3the sto 25 is arran ed uaon the end of a pivoted bar 32 which can bemoved out of operative or stopping position,

projects from the supply pipe 11. 30 indicates the pilot flame conduitwhich communicates with valve casing 3th (see Fig. 3,

constituting the gas supply pipe for sup-.21

plying gas to the pilot flame conduit 30, and for this purposecommunicates with the gas conduit 12 and with the valve casing 34:. Thebar abuts against the spindle of the valve 85 and holds or keeps thevalve closed owing to the action. of the spring 19 on the stopped part27 of the stopping arrangement whereas spring 37 tends to open the valveWhen'the parts are in the position shown in Figs. '2 and 3 of thedrawings in which position the incandescent body 4-. is active andluminous, being rendered so by the flame of the burner 28, the bar 32contacts'with or abuts against the valve spindle 36 to hold the valve 35in closed position so that the pilot flame is extinguished. If it shouldhappen that the incandescent body 4 should become ruptured, burst orbroken the flame of the burner 28 acts upon the stop device to releasethe parts which have been stationary, such release being efiected, inthe con- M struction shown, by the fusing or the burn ing of orotherwise rendering ineffective the pin 27 Upon this occurrence the bar32 is released and the spring 87 moves the same to the right, havingreference to Fig. 3, the valve 35 is opened and the flame of the burner28 ignites the gas as it issues from the mouth of the conduit 30, theflame of which constitutes a pilot flame. lmmedi ately, therefore, owingto the rotation of the cock casing 14, the fiame'of the burner 28isextinguished, but when a succeeding incandescent body is moved forwardinto the position previously occupied by the incandescent body a thecommunication between the burner 28 and the gas conduit 12 is restoredthrough the cook 13 so that the pilot flame with for the ruptured,.burstor broken in- 'candescent body and its associated burner a new orreserve pin 27 moves into contact c with th Stop 25 on the ba 32 and eee the latter back to-the position shown in=Fig.- 3 to close the valve-35and thereby extinguish the pilot'flame at themouth of the conduit 30.

In Figs. 4 and 5 I have shown a modified construction of apparatus inwhich the gas from an additional or reserve burneris ignited before itreaches the'place 'orposition previouslyoccupied by the burnerassociated with a previously ruptured, burst or broken incandescentbody, with the result that the additional or reserve incandescent bodywhich is associated with thesaid additional or reserve burner hasalready been heated and rendered luminous when it reaches the positionpreviously occupied by the ruptured, burst or broken incandescent body.The frame, shown in Figs. 4 and 5, comprising the arms 15 carrying theadditional or reserve incandescent body or bodies 5 is stopped andreleased in the same manner as in the construction shown in Figs; 2 and3, that is, by the aid of the pins 27, the stop 25 and the arm 32, thelatter being adapted to actuate the valve in the valve casing 34. Fromthe valve casing 34 a pilot flame conduit extends, which, in theconstruction shown, is connected with the pipe 38 provided with a narrowoutlet slot 39 or with a seriesof small out-flow holes. The pipe 38extends from a point in proximity to and preferably beyond the positionoccupied by the active incandescent body 4 to a point in proximity tothe position occupied by the next additional or reserve incandescentbody 5. Said pipe 38 preferably is of arcuate shape, as shown in Fig. 5,and has a radius of curvature somewhat greater than the length of thearms 24 and15 so as'to position the same outside of the path of movementof their outer ends. It will be observed that the arm 15 is situatedabove the plane 01": the arcuate pipe 38 and'also that the incandes centbodies k5, etc., which depend from the outer ends of arms 15 aresituated slightly above the out-flow slot 39 of the arcnate pipe 38, asbest shown perhaps in Fig. 4 of the drawings. hen the activeincandescent body 4 or any one or" the additional or reserveincandescentbodies which may have been moved into the position occupiedby the said active body 4, ruptures, bursts or breaks so that the flameof the active burner acts upon the element 27 of the stopping means toburn, fuse or otherwise weaken the same or render it ineffective so asto permit movement of the frame, comprising the arms 15, the valve inthe valve casing 34 is released as described in connection with Figs. 2and3 and a flame is lighted in the slot 39. This flame ignites theshellac coating upon the incandescent body 5 consisting, in theconstruction shown, of a mantle, it being understood that theseincandescent bodies are usually coated with" a means of'suitable holesor passageways 1n the" cock casing 14 whereby a flame may be lighted inthe said burner. Said flame may constitute a pilot flame for the mainflame,

lighted when the incandescentbody 5 reaches the position previouslyoccupied by the ruptured, burst or broken incandescent body 4, or it mayconstitute a main flame whereby the incandescent body reaches the saidposition in fully active and luminous condition.

The arrangement in Figs. 4 and just described is especially adapted forburning the shellac cover or coating of the mantle before the gas isadmitted to the burner.

In Figs. 6 and 7 I have shown a modified construction'of apparatusembodying my invention in which a movable frame carrying a plurality ofincandescent bodies is provided and in which a single burner is providedfor coiiperating successively with the said bodies. In the said Figs. 6and 7, as in the preceding figures, 11 designates a supply pipe orconduit through which gas is adapted to be supplied through apassage-wayin an arm 40 to a burner 41. In the construc tion shown thearm 40 is detachably connected with the supply pipe or conduit 11 but itmay be otherwise rigidly and stationarily secured thereto. In theconstruction shown in these figures the incandescent body which is shownin proximity to the burner 41 is designated by the reference numeral 4while the others of said bodies are designated by the numeral 5. Thesebodies are carried upon the outer ends of arms 42 which radiate from acentral hub 43 which is revolubly mounted upon the reduced upper endportion 44 of the pipe or conduit 11. The said hub is held in positionby means of the ring 45 which is secured to the reduced end portion 44by means of a binding screw 46. Although there are four arms 42 in theconstruction as illustrated it will be understood that a greater or lessnumber of arms may be employed as may be desired. The hub 43 is providedwith a gear 47 which is engaged by a pinion 48 upon the upper end of adriving shaft 18 which isdriven by the mechanism as illustrated in Fig.1 of the drawings. The upper end portion of the shaft 18 extends throughan opening in a laterally extending arm 26 which is secured by means ofa sleeve 50 to the pipe or conduit 11 being held in place thereon bymeans of a binding body 4 which is situated underneath and incooperative relation with the burner 41. The purpose of the pilot burner54 is to ignite the gas from the burner 41 in case the flame of thelatter should be extinguished by the movement of an arm 42 and anincandescent body into position underneath the same. Should it occurthat the flame of the burner 41 should be thus extinguished it isdesirable and necessary that means such as the pilot burner 54 beprovided for re-igniting the same. The incandescent bodies 4 and 5(which in the constructions shown are in the form of mantles) aresupported underneath flattened portions 55 at the outer ends of the arms42. These flattened portions are provided with holes 56 through whichthe flame from the, burner 41 acts upon the said incandescent bodieswhen they occupy the position with respect thereto indicated by the body4 in Figs. 6 and 7. As in the previous figures, 25 designates anindestructible stop member which is adapted to cooperate with the stopmember 27 which is adapted to be rendered ineffective by burning orotherwise when the incandescent body 4 is ruptured so as to permit theflame from the burner 41 to, act thereon. The stop members 27 arecarried upon the lower ends of arms 60 which depend downwardly from theradial arms 42.

In the form of construction illustrated in Figs. 6 and 7 a single burneris employed which is adapted to cooperate successively with theincandescent members which are carried upon the outer ends of the arms42. When the incandescent member which is in position underneath theburner 41 is ruptured whereby the stopping means is rendered ineffectivethe action of the spring .19 through the pinion 48 causes rotation ofthe gear 47 and the arms 42 having connection therewith so as to movethe next succeeding arm 42 with the incandescent body thereon into theposition underneath the burner 41.

I claim 1. In an apparatus for automatically exchanging incandescentbodies, the combination of burners, an incandescent body associated withan active burner, an additional incandescent body associated with aninactive burner, meanstending to move the said burners and the saidbodies so as tomove the inactive burner and its associated body into theposition occupied by the active burner and its associated body wherebysaid inactive burner is brought into activity, and

' stopping means for retaining the said burners and bodies inpredetermined positions said stopping means including a part adapted tobe rendered inefi'ective by the action thereon of the flame of theactive burner in case its associated incandescent body should becomeruptured to permit the passage of the flame to the stopping means.

2. An apparatus for automatically exchanging incandescent bodiescomprising burners and anincandescent body associated with each burner,one burner and one body being active and the remaining burner or burnersand body or bodies being inactive, a stopping device for retaining thesaid active burner and body in active position and the remaininginactive burner or burners and body or bodies in inactive position, saidstopping device including a member adapted to be rendered inelfective bythe action of the fiame of the active burner should the incandescentbody associated therewith be ruptured, and means for automaticallymoving a reserve burner and its associated reserve body into activeposition when said active body is ruptured. v

3. An apparatus for automatically exchanging incandescent bodiescomprising burners and an incandescent body associated with each burner,one of said burners being active and the other or others inactive, amovable frame supporting such burners and incandescent bodies, meanstending to move said frame, and stopping means for holding said frame incertain predetermined positions said stopping means comprising membersadapted to contact with each other, one of which members is adapted tobe rendered ineffective by the action of the flame of the active burnerthereon when said incandescent body is ruptured.

4. An apparatus for automatically exchanging incandescent bodies, saidapparatus comprising a plurality of burners and incandescent bodiesassociated respectively therewith, means for causing movement of thesaid burners and the bodies associated therewith, and means forretaining the said burners in predetermined positions in which one ofthe said burners is active while the other or others are inactive, suchmeans including a part adapted to be rendered ineffective by the actionof the flame of the active burner in case the incandescent bodyassociated therewith should become ruptured. I 5. In an apparatus forautomatically exchanging incandescent bodies, a movable cock casingcarrying an incandescent body,'a power device'for actuating said casing,a

cock in said casing communicating with a gas cent body associated withsaid burner, apilot flame conduit, means for closing the said pilotflame conduit, stopping means for retaining the said movable cock casingin predetermined position, said stopping means being adapted to operateupon said means for closing the said pilot flame conduit to close thesame, the said stopping means including a member which is adapted to berendered inefiective by the action of the flame of the said burnerthereon when the said incandescent body is ruptured, burst or broken.

7. In an apparatus for automatically ex changing incandescent bodies,the combination of a movable cock casing, meanstending to cause movementof said casing, a cock in said casing communicating with a gas conduit,a burnerfor said incandescent body terminating said conduit, anincandescent body associated with said burner, a, pilot flame conduit,means for closingsaid pilot flame conduit, and stopping means forretaining the said movable cock inpredetermined, position, the saidstopping means including a member adapted to act upon the means forclosing the said pilot flame conduit and the said stopping means alsoincluding a member which is adapted to become inetlective upon theaction of the flame of the burner thereon when said incandescent body isruptured, burst or broken to thereby release the said movable cock topermit movement thereof.

8. In an apparatus of the character described, the combination of amovable member, a power device for causing movement of the said member,incandescent bodies and burners associated respectively with said bodiescarried by said movable member, means for retaining the said member inpredeterminedpositions, means for supplying gas to that burner which issituated in proximity to the means for retaining the said member instopped position, said retaining means including a member which isadapted to be rendered ineffective by the action thereon of. the flameof the burner in proximity thereto when the incandescent body associatedwith such burner is ruptured to thereby release the said movablememberand permit further movement thereof into a succeeding predetermindposition.

9.ln an apparatus of the character. de scribed, the combination of arotatable member having arms extending laterally therefrom said armsbeing provided with burners, bodies carried upon said arms andassociated respectively with said burners which bodies are adapted tobecome incandescent by the action of heat thereon, means for causingrotation of said rotatable member, means for holding the said rotatablemember against rotation, said means being situated in proximity to oneof said bodies when thesaid rotatable member is in stoppedposition, amember carried by said rotatable member for cooperating with the saidretaining means, and means for supplying gas to the said burner situatedin proximity to the said retaining means when the said rotatable memberis held against rotation, the said member for cooperating with the saidretaining means being adapted to be rendered ineffective by the actionof the heat of the flame of the burner thereon.

10. In an apparatus of the character described, the combination of amovable member provided with a plurality of incandescent bodies, one ofwhich is active and the others of which are inactive, means forsupplying gas for a flame which heats the active incandescent member,and means for causing movement of the said movable member, stoppingmeans for retaining the said movable member and said bodies in stoppedposition, said stopping means being adapted to be rendered ineffectiveby the action of said flame thereon when the said active body isruptured to thereby release said member andpermit movement thereof tocarry a succeeding or additionalincandescent body into the positionpreviously occupied by the active incandescent member.

11. In an apparatus of the character described, the combination of astationary tubular member one end of which communicates with a gassupply conduit and the the said arms successively into alinement with ahole in the said cock which communicates with the said tubular member,means for holding the said rotatable member in stationary position, saidmeans comprising a movable and .a stationary member the latter beingsituated in proximity to can incandescent body when the said rotatablemember is in stopped position, the said movable member consisting ofmaterial which is adapted to be rendered ineiiective by the action ofthe flame of the burner acting thereon, and means for igniting theburner which is situated adjacent to the said stationary stoppingmember.

12. In an apparatus of the character described, the combination of arotatable member carrying a plurality of bodies adapted to be renderedincandescent by the action thereon of a flame, means for causingrotation of said member, means for holding the said member againstrotation, said means including a part which is adapted to be renderedineffective by the action of heat thereon, means forsupplying gas forthe flame her having a plurality of arms'provided with passage-waystherethrough for the passage of a gas, means for causing rotation of thesaid member," and a conduit for supplying gas to the passage-ways insaid arms as the latter are brought successively into a predeterminedposition.

14. In an apparatus of the character de scribed, the combination of arotatable member provided with a plurality of passageways for thepassage of a gas therethrough said passage-ways terminating in burners,incandescent members associated with the said burners, means for causingrotation of the said rotatable member, means for supplying gas to thepassage-ways in said rotatable member as such passage-ways are broughtsuccessively into a predetermined position, means for igniting the gasin the burner of such passage-way when the gas escapes therefrom, andstopping means for controlling the rotary movement of said member, thesaid stopping means being adapted to be rendered ineffective by theaction of the burner flame thereon.

15'; In an apparatus of the character described, the combination of amovable member carrying a series of bodies adapted to becomeincandescent by the action of heat thereon, one of the said bodies beingactive and the other or others of said bodies being inactive, and meansacting automatically upon the rupturing of an active body to move aninactive body into the position previously occupied by said rupturedbody.

16. In an apparatus of the character described, the combination of aplurality of burners and a body adapted to become incandescent upon theapplication of heat thereto associated with each burner, and meansacting automatically upon the rupturing of an active body for causingmovement of said ruptured body and an associated burner and for causingsimultaneous movement of a formerly inactive body and its associatedburner into the position pre viously occupied by said ruptured body andits associated burner.

17. In an apparatus of the character described,the combination of arotatable mem her having a plurality of arms extending therefrom, saidarms being angularly arranged with respect to each other and each ofthem terminating in a burner, means for causing rotation of said member,stopping means for retaining said member in stopped position with aburner in proximity to said stopping means, means for'supplying gas tosaid burner, a pilot burner of arcuate shape and extending from apointin proximity to said burner a distance toward the next succeedingburner, and means for supplying gas to said pilot burner.

18. The combinationof an incandescent body rendered active by the actionof a flame thereon and a reserve incandescent body and automatic meansrendered opera.

tive by the action of said flame upon the rupturing of the active bodyfor, causing the reserve body to take its place.

19. The combination of an incandescent body, means for supplying'a flameto render said incandescent body luminous, a reserve incandescent body,and means rendered operative upon the rupturing of-the first-namedincandescent body for causing the reserve incandescent body to take itsplace;

20. The combination. of an incandescent body, means for rendering saidbody lumig nous, a reserve incandescent bodyand means renderedoperativeupon the rupturing of the first-named incandescent'body wherebysaid reserve incandescent body, is caused to become luminous.

21. The combination of an incandescent body, means for supplying a flameto render the said body luminous, a reserveincandoscent body, andautomatic means rendered operative by the heat .of said flame upon therupturing of the first-named body for causing the reserve body to moveinto the position previously occupied by the said firstnamed body whereit is subjected to said flame and thereby rendered luminous.

22. The combination of a pilot flame burner, a plurality of incandescentbodies, supporting means for said incandescent bodies, means forarresting the said bodies with one of them in cooperative relation withrespect to the said pilot flame burner, means for supplying a flame forrendering the last mentioned body luminous, and automatic means renderedoperative upon the rupturing of said luminous body for moving saidruptured body away from the pilot flame burner and for causing anotherbody to take its place. i

23. The combination of a pilot flame burner, a plurality of movable armseach carrying an incandescent body, means for retaining the said arms inposition with the body carried by one of them in cooperative relationwith respect to the pilot flame burner, means for applying heat to thelast mentioned body to render the same luminous, and automatic meansrendered operative upon rupture of the said luminous body for moving thearms to carry the said ruptured body away from the pilot flame burnerand for causing another body carried by one of the arms to take itsplace."

24. In an apparatus of the character described, the combination of aplurality of movable members each supporting an in candescent body,means for supporting the said members, means for causing movement of thesaid members, means for supplying a flame to render one of saidincandescent bodies at least luminous, stopping means for arresting thesaid members in predetermined position, one member of the said stoppingmeans being situated stationarily in proximity to the position at whicha body is adapted to be rendered luminous by such flame, and otherelements of the said stopping means having connection respectivelycopies of this patent may be obtained. for

with the said movable member and being movable in unison therewith, thesaid stopping means being rendered inefiective by the action of saidflame When the said luminous incandescent body is ruptured to therebyrelease the said movable members and permit movement thereof.

In testimony whereof I have afiixed my signature in presence of tWoWitnesses.

. GUSTAF DALEN. Witnesses:

GRETA PRIEN, VALDEMAR BoMAN.

five cents each, by addressing the "Commissioner of Eatents, Washington,D. G.

